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CVE-2020-27827

A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial ...

Published: Mar 18, 2021Updated: Dec 3, 2025 Sources: CVE List NVD BDU csafCWE-400
NVD MITRE
7.5CVSSHIGH
EPSS Score
3.2%
Top 13.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

There are multiple vulnerabilities in an underlying Link Layer Discovery Protocol (LLDP) third party library. Siemens has released updates for the affected products and recommends to update to the latest versions.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-400

Affected Products

lldp/openvswitchn/a
lldpdlldpd project
On-prem
Networking Infrastructure / network-management
openvswitchopenvswitch
On-prem
Networking Infrastructure / router-switch
openshift container platformredhat
SaaSSaaS Service
Cloud & SaaS / container-orchestration
openstackredhat
On-prem
Cloud & SaaS / container-orchestration
lldpd projectoss-projectNetworking Infrastructureaka lldpd
openvswitchoss-projectNetworking Infrastructureaka ovs
redhatcommercialUSOperating Systemsaka red hat
and 23 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/csaf/ssa-941426.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/txt/ssa-941426.txt
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf
cert-portal.siemens.com
and 25 more references View all →

Timeline

Published
Mar 18, 2021
Last Updated
Dec 3, 2025

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